Find `go` statements using Go analyzer

Build a basic Go analyser that finds `go` statements.

Currently testing this with:

    $ go run ./cmd/gocapturedrefrace ./testdata/

Using the following tutorials as a guide:

* https://arslan.io/2019/06/13/using-go-analysis-to-write-a-custom-linter/
* https://scribe.rip/codex/writing-custom-linter-in-go-54ef6f8080

1 files changed, 9 insertions, 0 deletions

diff --git a/testdata/simple.go b/testdata/simple.go
new file mode 100644
index 0000000..496be52
--- /dev/null
+++ b/testdata/simple.go
@@ -0,0 +1,9 @@
+package main
+
+func main() {
+	capturedReference := 0
+
+	go func() {
+		capturedReference += 1
+	}()
+}